Islamabad , Pakistan -LRB- CNN -RRB- -- The Pakistani Taliban vowed Thursday to carry out attacks against India to avenge the death of a man executed by Indian authorities for his role in the 2008 terrorist assault on Mumbai .

Mohammed Ajmal Kasab , a Pakistani , was hanged Wednesday in Pune , a city southeast of Mumbai . He was the lone surviving gunman from the attacks in India 's financial capital in November 2008 that killed more than 160 people .

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Ihsanullah Ihsan , the spokesman for the Pakistani Taliban , said the militant group would conduct various attacks in India in response to the execution . He did n't provide further details .

The Pakistani Taliban , who are closely linked with their namesake in Afghanistan and with al Qaeda , operate in the ungoverned area that sits on the border of Pakistan and Afghanistan .

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India has requested extra protection for its diplomats in Pakistan following the execution , said J.P. Singh , an official at India 's Ministry of External Affairs .

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He said the ministry had no immediate comment on the threat from the Taliban .

The Taliban spokesman said they are demanding that Kasab 's body be returned to Pakistan for an Islamic burial . He criticized the Pakistani government , saying it had failed by not requesting the return of the body .

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Indian authorities said Wednesday that Kasab had been buried in the `` surrounding area '' of the jail where he was hanged . They did n't say what kind of burial rites had been performed .

The Pakistani government has so far barely commented on the execution . The foreign ministry declined to give an immediate reaction Thursday to the Taliban 's criticism .

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India blamed Lashkar-e-Tayyiba , a Pakistani-based terror group allied with al Qaeda , for the Mumbai siege .

Indian authorities said Kasab was trained by the organization , which was banned in Pakistan in 2002 after an attack on the Indian parliament . The group has denied responsibility .

The Mumbai attacks destabilized peace talks between the Indian and Pakistani governments , which remain bitterly opposed over issues such as the disputed Himalayan territory of Kashmir .

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Since then , the two nuclear-armed nations have resumed the high-level meetings and relations have improved .

In April , Pakistani President Asif Ali Zardari met with Prime Minister Manmohan Singh in New Delhi during a brief private trip . It was the first visit to India by a Pakistani head of state in seven years .

Indian sporting authorities also this year announced the resumption of bilateral cricket tournaments with Pakistan . The sport has often been used as a platform to ease relations .

But tensions remain close to the surface . In August , New Delhi alleged that `` elements '' in Pakistan were using social-networking sites to stir religious unrest in India amid ethnic clashes between Muslim migrants and native tribal groups in the northeastern state of Assam .

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News of Kasab 's death was positively received Wednesday by many Indians . The conservative Bharatiya Janata Party , the country 's main opposition party , expressed support for the government 's decision to go ahead with the execution .

`` It 's a strong message that India does not and will not tolerate terrorism , '' said Prakash Javadekar , a party spokesman .

But human rights activists criticized the move .

`` The hanging of Ajmal Kasab marks a distressing end to India 's moratorium on executions and is a step backwards for India 's justice system , '' said Meenakshi Ganguly , South Asia director at Human Rights Watch , an advocacy group . `` The government should take prompt and decisive action toward a total abolition of capital punishment . ''

The last state execution in the country was in 2004 , when a man was hanged for the rape and murder of a teenage girl .

CNN 's Sumnima Udas in New Delhi contributed to this report .

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Mohammed Ajmal Kasab was hanged Wednesday in India for his role in the attacks

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The Pakistani Taliban say they will conduct various attacks against India in revenge

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They also say they are demanding his body be returned to Pakistan

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Indian authorities say they have already requested extra security for diplomats